The project apparently has no BOINC site yet.
jm7
Rod Walker
<rodney.wal...@ph
ysik.uni-muenchen To
.de> David Anderson
Sent by: <[email protected]>
<boinc_dev-bounce cc
[email protected] Kevin Reed <[email protected]>,
u> BOINC Developers Mailing List
<[email protected]>, Mark
Silberstein
06/29/2010 03:39 <[email protected]>
PM Subject
Re: [boinc_dev]
--allow_multiple_clients ignored
Hi,
Glad for the fix, but just to point out there is no great hurry. I was
made aware of an EU project apparently doing much the same as I
proposed, BOINC on LHC Grid,
http://edgi-project.eu/en/main/intro.xml
so I'll have to digest this a little. I'm pretty sure they would have
the same problem though.
Cheers,
Rod.
On 06/29/2010 08:53 PM, David Anderson wrote:
> Kevin:
> If you apply the changes in [21839] to handle_request.cpp
> (it's only 3 lines) then things will work for Rod,
> and you'll still have duplicate-host protection.
> -- David
>
> On 29-Jun-2010 11:32 AM, Kevin Reed wrote:
>> WCG won't run without the protection against creating multiple hosts. We
>> have too many users who have the client installed on machines that are
>> re-imaged nightly or weekly which cause a lot of abandoned results if
>> the hosts are not linked with previous entries.
>>
>> We need to update our server so we will work on that (option 2)
>>
>> In the meantime, I can throw a hack onto our server if needed for a
>> specific user. I haven't been following on this thread but if the user
>> sends an email to [email protected], then I can help them.
>>
>> thanks,
>>
>> Kevin Reed
>> . . . . . . . . . . . . . . . . . . . . . . . . .
>> i b m i n t e r a c t i v e
>> 71 S. Wacker Dr
>>
>>
>> Inactive hide details for David Anderson ---06/29/2010 11:56:52 AM---I
>> think I figured this out. It turns out that the --allow_David Anderson
>> ---06/29/2010 11:56:52 AM---I think I figured this out. It turns out
>> that the --allow_multiple_clients option
>>
>> From: David Anderson <[email protected]>
>> To: Rod Walker <[email protected]>, BOINC Developers
>> Mailing List <[email protected]>
>> Cc: Kevin Reed/Chicago/i...@ibmus, Mark Silberstein
>> <[email protected]>
>> Date: 06/29/2010 11:56 AM
>> Subject: Re: [boinc_dev] --allow_multiple_clients ignored
>>
>> ------------------------------------------------------------------------
>>
>>
>>
>> I think I figured this out.
>> It turns out that the --allow_multiple_clients option
>> assumes a corresponding server option that tells the scheduler
>> to allow multiple concurrent requests from a given host.
>> I implemented this scheme for a particular project, superl...@technion.
>> No other BOINC projects (including WCG) use this server option,
>> which is why Rod gets the "Another instance" errors.
>>
>> I have fixed this as follows: the client now tells the server
>> that it was run with --allow_multiple_clients,
>> and the server handles it accordingly, with no special server flags.
>>
>> Now, there are 2 ways to make things work with WCG:
>>
>> 1) WCG uses its current server software and sets the
>> <multiple_clients_per_host> flag in its config file.
>> No client changes needed.
>> The drawback: WCG loses its protection against buggy clients
>> creating duplicate host records.
>>
>> 2) WCG updates its server software with changes in [21839],
>> and Rod uses clients built from the SVN trunk.
>>
>> Kevin, any thoughts?
>>
>> -- David
>>
>> PS to Mark Silberstein: this change means that when up upgrade your
>> server software to [21839] or later,
>> you'll need to start using a new client.
>>
>> On 28-Jun-2010 1:10 PM, Rod Walker wrote:
>> > There's no problem with multiple clients per host, as long as:
>> >> 1) you use the --allow_multiple_clients option
>> >> 2) each client has its own data directory,
>> >> and you don't copy client_state.xml into this directory
>> >> (client_state.xml contains host IDs, and each client must
>> >> have a separate host ID).
>> >> Are you doing both of these things?
>> > Yes. I do not provide client_state.xml and this file is not in the job
>> > run directory after boinc has run. Choosing 2 clients which ran on the
>> > same host at the same time...
>> > 13-Jun-2010 16:55:22 [---] Data directory: /tmp/ri32buz/boinc_TN5146
>> > 13-Jun-2010 16:56:08 [World Community Grid] Started download of
>> > wcg_hcc1_img_6.0
>> > 8_i686-pc-linux-gnu
>> >
>> > and then ran to completion. The other
>> >
>> > 13-Jun-2010 16:55:27 [---] Data directory: /tmp/ri32buz/boinc_CL5241
>> > 13-Jun-2010 16:56:12 [World Community Grid] Message from project
>> server:
>> > Not sen
>> > ding work - last request too recent: 5 sec
>> >
>> > Both are started with args
>> > /boinc --attach_project www.worldcommunitygrid.
>> > org 43ec69412c60d394929d1d31f2495411 --fetch_minimal_work
>> > --exit_when_idle --no_
>> > gui_rpc --no_priority_change --allow_multiple_clients
>> >
>> > but in the log I only see Config lines
>> > 13-Jun-2010 16:55:27 [---] Config: run apps at regular priority
>> > 13-Jun-2010 16:55:27 [---] Config: report completed tasks immediately
>> > 13-Jun-2010 16:55:27 [---] Config: fetch minimal work
>> >
>> > Should a line for --allow_multiple_clients show up here? I do not see
>> > that in the code. Recall that I built this from the svn head in
>> order to
>> > get the --fetch_minimal_work functionality.
>> > The other error I see, in a different log, is
>> > 13-Jun-2010 16:56:14 [World Community Grid] Message from project
>> server:
>> > Another
>> > scheduler instance is running for this host
>> >
>> > I do NOT see this error though
>> > log_message_error("Another instance of BOINC is running.");
>> > so I guess config.allow_multiple_clients is set. The problem seems
>> to be
>> > on the project side, like the project uses the hostname rather than a
>> > hostID.
>> >
>> >> I don't know what WLCG and WN stand for.
>> > WLCG is an acronym factory. World LHC Computing Grid, i.e. the
>> computing
>> > part of the atom smasher in Geneva. WN=Worker node (host in a
>> cluster).
>> >
>> > This security info should be well received. For sure, IBM do not
>> want to
>> > get sued when boincers go bad.
>> >
>> > Cheers,
>> > Rod.
>> >
>> >>
>> >> BOINC projects are not peer-reviewed in general. However:
>> >>
>> >> 1) IBM World Community Grid has only applications that are
>> >> reviewed by IBM security experts, and that do some type of
>> >> good-of-humanity science (biomedicine, environment).
>> >> If you attach only to WCG, you have very strong security.
>> >>
>> >> 2) The projects listed on http://boinc.berkeley.edu/projects.php
>> >> are known to me, and can be trusted.
>> >>
>> >> -- David
>> >
>>
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